Three new species of mites of the genus Bakerdania Sasa, 1961 (Acari: Heterostigmata: Neopygmephoridae) from “ Cape Martyan ” Nature Reserve, Crimea Author Khaustov, Alexandr A. text Zootaxa 2010 2600 53 60 journal article 10.5281/zenodo.197582 4d82851e-c120-4461-86e2-36e4c3a83452 1175-5326 197582 Bakerdania undulata Khaustov sp. nov. Figs. 6–10 . FIGURES 6–7. Bakerdania undulata sp. nov . , female: 6— dorsum, 7—venter. Scale-bar—50 µm. Description. FEMALE: Idiosomal length 297, maximum width 150. Gnathosoma ( Figs. 6–7 ) dorsally with 2 pairs of simple setae, ch 1 distinctly longer than ch 2. Dorsal medial apodeme well developed. Setae dFe needlelike. Idiosomal dorsum ( Fig. 6 ). All tergites smooth. Setae v 2 smooth, other dorsal setae barbed. Tips of setae sc 2, c 1, d , and e , blunt. Other dorsal setae pointed. Length of dorsal setae: v 2 10 , sc 2 47, c 1 58, c 2 73, d 43, e 27, f 103, h 1 104, h 2 74. Distances between dorsal setae: v 2- v 2 38 , sc 2- sc 2 36, c 1– c 1 47, c 1– c 2 30, d–d 50, e–f 9, f–f 85, h 1– h 1 58, h 1– h 2 8. Idiosomal venter ( Fig. 7 ). Apodemes 1, 2, and sejugal apodeme well developed and joined with presternal apodeme. Secondary transverse apodeme absent. All ventral plates smooth. Setae 1 a and 1 b strongly barbed, setae 2 a with several thin barbs, other ventral setae smooth. Posterior margin of posterior sternal plate tripartite. Setae ps 3 situated close to base of ps 2. Apodemes 3 weakly developed, diffuse. Apodemes 4 long, reaching level of setae 3 c . Apodemes 5 absent. Posterior margin of aggenital plate concave. Length of ventral setae: 1 a 21, 1 b 22, 2 a 23, 2 b 19, 3 a 23, 3 b 21, 3 c 20, 4 a 13, 4 b 24, 4 c 18, ps 1 18, ps 2 12, ps 3 11. Legs ( Figs. 8–10 ). Setation of legs as in B. latissimosetosa sp. n. Leg I ( Fig. 8 ). Tibiotarsus with simple small claw situated on long pretarsus. Solenidia ω1 15> ω2 11> φ1 9> φ2 7. Solenidion ω1 finger-shaped. Solenidion φ1 baculiform. Solenidia ω2 and φ2 uniformly thin. Seta dFeI hook-like, setae l’GeI blunt. Leg II ( Fig. 9 ). Tarsus with simple sickle-like claws. Solenidion ω (13) finger-shaped. Solenidion φ small, difficult to see, setae d’FeII blunt. Leg III. Solenidion φ small, difficult to see, setae d’FeIII blunt. Leg IV ( Fig. 10 ). Tarsus short. Pretarsus short, with large simple claws and thin, tongue-like empodium distally. Setae v”TiIV , pl”TaIV blunt. Length of setae v”TiIV 19, pl”TaIV 17. FIGURES 8–10. Bakerdania undulata sp. nov . , female: 8–10—legs I, II, and IV, respectively. Scale-bar—20 µm. MALE and LARVA unknown. Type material. Female holotype and 5 female paratypes , UKRAINE , Crimea, “Cape Martyan” Nature Reserve, in soil under grass, 10 March 2010 , coll. A. A. Khaustov. Etymology. The species name refers to “undulate” posterior margin of posterior sternal plate of the new species. FIGURES 11–12. Bakerdania martyaniensis sp. nov . , female: 11—dorsum, 12—venter. Scale-bar—50 µm. Differential diagnosis. The new species is most similar to B. palustris Khaustov, 2008 . Both species have long and thin setae f and h 1, unmodified setae e , short and smooth setae on posterior sternal plate, tripartite posterior margin of posterior sternal plate. The new species differs by subequal setae f and h 1 (in B. palustris setae f distinctly longer than h 1), by blunt setae c 1 (in B. palustris setae c 1 pointed).